NOAA’s operational geostationary satellite retrievals of aerosol optical depths (AODs) were used to verify National Weather Service developmental (research mode) particulate matter (PM2.5) predictions tested during the summer 2004 International Consortium for Atmospheric Research on Transport and Transformation/New England Air Quality Study (ICARTT/NEAQS) field campaign. The forecast period includ...

This viewer presents selected emission factors and abatement efficiencies included in the EMEP/EEA Guidebook 2023. Information is ordered by the respective Nomenclature For Reporting (NFR) source category code. Not all emission factors included in the Guidebook are included in this viewer, users should always therefore consult the relevant chapter. In case of discrepancies between values appearing...

The following emission estimation technique (EET) manuals are approved for use by industry in Australia. There are 94 EET manuals.EET manuals are listed by industry sector. Some industry sectors may require one or more EET manual. The National Pollutant Inventory Guide (NPI Guide) should be used in conjunction with all manuals. Diffuse emissions manuals can also be used to estimate emissions at yo...

Methane is a greenhouse gas emitted by a range of natural and anthropogenic sources. Atmospheric methane has been measured continuously from space since 2003, and new instruments are planned for launch in the near future that will greatly expand the capabilities of space-based observations. Authors review the value of current, future, and proposed satellite observations to better quantify and unde...

Authors review the capability of current and scheduled satellite observations of atmospheric methane in the shortwave infrared (SWIR) to quantify methane emissions from the global scale down to point sources. They cover retrieval methods, precision and accuracy requirements, inverse and mass balance methods for inferring emissions, source detection thresholds, and observing system completeness. Th...

By systematically reviewing over 10,000 publications using a large-language-model-based framework, the authors provide a large-scale quantitative assessment of the global research landscape on climate change’s impact on air quality. Particulate matter (PM) and ozone (O3) are the most frequently studied pollutants, with a notable shift in focus from O3 to PM in recent years. Temperature, as a prima...

The air quality forecasting system is an essential tool widely used by environmental managers to mitigate adverse health effects of air pollutants. This work presents the latest development of the next-generation regional air quality model (AQM) forecast system within the Unified Forecast System (UFS) framework in the National Oceanic and Atmospheric Administration (NOAA). The UFS air quality mode...

Forecast verification is an essential function of National Meteorological and Hydrological Services (NMHSs), underpinning their ability to deliver accurate, reliable, and actionable weather, climate, and water-related information. As NMHSs face increasing demands for transparency, accountability, and continuous improvement, they require robust systems to assess and enhance the quality of their for...

Extreme heat and particulate matter (PM2.5) pollution are among the deadliest environmental hazards that threaten humans and ecosystems. Their co-occurrence, known as compound heat-pollution events, can amplify risks far beyond those posed by either hazard alone, but their global patterns and physical mechanisms are yet to be understood. Here, the authors present a global assessment of compound he...

The online version of the Regional Air Quality Deterministic Prediction System (RAQDPS) is a chemical weather forecast system that has been employed operationally by Environment and Climate Change Canada (ECCC) since 2009. It is run twice per day to produce 72 h forecasts of hourly 10 km abundance fields of three key predictands, NO2, O3, and PM2.5 total mass, as well as other gas-phase chemical s...